Filtration efficiency as per ASTM
F2100 19**
– BFE > 99% Level 3
– PFE > 99% Level 3
**Filter material tested by external labs, as per testing requirements of ASTM F2100-19
Available Upon Request Only
Replacement filter inserts (12pcs/pk) for dual layer face cover. When appropriately fitted, will block more than 95% of 3-micron-sized particles (BFE) and 0.1-micron-sized particles (PFE). Filter inserts comes with “L” and “R” indicators for fitting onto the face cover.